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Home >> Ford >> 2002 >> Taurus SES, 3.0 S >> Repair and Diagnosis >> External Pages >> Different car >> Section 206 (Engine Controls - Trouble Shooting - No Codes - 6.0L (99P F450/550) Diesel) >> Symptoms >> Rough Or Rolling Idle Or Stalls When Engaging Clutch

Rough Or Rolling Idle Or Stalls When Engaging Clutch

WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

  1. Preliminary Checks

    Check engine oil level. Check for proper oil API rating (CI-4, CI-4/SL or DHD-1) and viscosity. Ensure engine oil has been changed within last 5000 miles. Check fuel quality. Check air filter minder to see if filter needs to be replaced. Repair any problems as necessary. If no problems are indicated, go to next step.

  2. Perform KOEO On-Demand Self-Test

    Perform KOEO ON-DEMAND SELF-TEST under QUICK TEST in SELF-DIAGNOSTICS - 6.0L DIESEL article. If no DTCs are present, go to next step. If any DTCs are present, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - 6.0L DIESEL article and perform appropriate SYSTEM TESTS.

  3. Perform KOEO Injector Electrical Self-Test

    Perform KOEO INJECTOR ELECTRICAL SELF-TEST under QUICK TEST in SELF-DIAGNOSTICS - 6.0L DIESEL article. If no DTCs are present, go to next step. If any DTCs are present, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - 6.0L DIESEL article and perform appropriate SYSTEM TESTS.

  4. Check For Aerated Engine Oil

    Perform TEST 18: OIL AERATION TEST under ENGINE PERFORMANCE DIAGNOSTIC PROCEDURES in SYSTEM & COMPONENT TESTING - 6.0L DIESEL article. Repair any problems as necessary. If no problems are indicated, go to next step.

  5. Injection Control Pressure Test

    Perform TEST 14: LOW IDLE STABILITY (ICP PRESSURE) under ENGINE PERFORMANCE DIAGNOSTIC PROCEDURES in SYSTEM & COMPONENT TESTING - 6.0L DIESEL article. Repair any problems as necessary. If no problems are indicated, go to next step.

  6. Low Idle Stability Test

    Perform TEST 14: LOW IDLE STABILITY (ICP PRESSURE) under ENGINE PERFORMANCE DIAGNOSTIC PROCEDURES in SYSTEM & COMPONENT TESTING - 6.0L DIESEL article. Repair any problems as necessary. If no problems are indicated, go to next step.

  7. Check For Biased ICP Sensor

    Perform TEST Q: INJECTION CONTROL PRESSURE SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - 6.0L DIESEL article. Repair any problems as necessary. If no problems are indicated, go to next step.

  8. Check Fuel Pump Pressure

    Perform TEST 10: ELECTRIC FUEL PUMP PRESSURE under ENGINE PERFORMANCE DIAGNOSTIC PROCEDURES in SYSTEM & COMPONENT TESTING - 6.0L DIESEL article. Repair as necessary. If fuel pump pressure is okay, go to next step.

  9. Check Lubrication Pressure

    Remove oil pressure sender. Oil pressure sender is located on top of engine behind oil filter. Connect an oil pressure gauge to oil pressure sender galley port. Run engine until operating temperature is reached. With engine idling, engine oil pressure should be 10 psi (69 kPa) or more. If engine oil pressure is as specified, go to next step. If engine oil pressure is not as specified, check for cause of low oil pressure and repair as necessary.

  10. KOER On-Demand Self-Test

    Ensure engine is at normal operating temperature. Clear DTCs. Perform KOER ON-DEMAND SELF-TEST under QUICK TEST in SELF-DIAGNOSTICS - 6.0L DIESEL article. If DTC P2291 is present, perform TEST AQ: INJECTOR CONTROL PRESSURE TOO LOW - ENGINE CRANKING under SYSTEM TESTS in SELF-DIAGNOSTICS - 6.0L DIESEL article. Repair as necessary. If no DTCs are present, go to next step.

  11. Check Pressure Balance

    Remove valve covers. Remove high pressure hose from right cylinder head. Plug high-pressure hose for right cylinder head using plug from Oil High Pressure Leakage Test Adapter Set (303-756). See Fig 1. Record IPR at 3,000 RPM. Plug high-pressure hose for left cylinder head and reattach high-pressure hose on right cylinder head. Record IPR at specified RPM. If IPR duty cycle difference is greater than 2 percent, go to next step. If it is not, install a new IPR.
    Fig 1: Locating High Pressure Hose
    G00205907Courtesy of FORD MOTOR CO.

  12. Check For Leak Source

    Remove valve cover from cylinder bank with higher IPR duty cycle. With engine idling, check for bubbling around injector bores or oil gallery drain plugs. If bubbles are noticeable or leaks are heard, replace "O" rings on injectors or reseal oil galleries as necessary. If no leaks are detected, go to ENGINE PERFORMANCE DIAGNOSTIC PROCEDURES in SYSTEM & COMPONENT TESTING - 6.0L DIESEL article.

  13. Check Rough Idle

    If a rough idle was present when vehicle was new or after a new high pressure oil pump was installed, check high pressure oil pump. If a rough idle was not present when vehicle was new or after a new high pressure oil pump was installed, go to next step.

  14. Check For Engine Wear

    Perform TEST 17: CRANKCASE PRESSURE TEST under ENGINE PERFORMANCE DIAGNOSTIC PROCEDURES in SYSTEM & COMPONENT TESTING - 6.0L DIESEL article. If crankcase pressure reading is more than 3 in. H2O, check engine mechanical condition (compression rings, cylinder bores, valves, etc.). Repair as necessary. If crankcase pressure reading is 3 in. H2O or less, go to TEST P: MISFIRE/INJECTOR DRIVE CIRCUIT OPERATION , step 16  , under SYSTEM TESTS in SELF-DIAGNOSTICS - 6.0L DIESEL article.

  15. Check Mass Air Flow Sensor

    Perform TEST J: MASS AIR FLOW SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - 6.0L DIESEL article.
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